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Finding the Fourth Proportional to 642,129.66, 963,205.29 and 242,958.42

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Solution

The fourth proportional to 642,129.66, 963,205.29 and 242,958.42 is: 364,441.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,129.66 : 963,205.29 = 242,958.42 : x
  2. Step 2: Convert to fraction form
    642,129.66/963,205.29 = 242,958.42/x
  3. Step 3: Cross multiply
    642,129.66x = 963,205.29 × 242,958.42
  4. Step 4: Simplify right side
    642,129.66x = 234,018,835,394.04
  5. Step 5: Solve for x
    x = 234,018,835,394.04/642,129.66
  6. Step 6: Final answer
    x = 364,441.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.